Abstract This paper presents results from the national Austrian project “Highly efficient combinations of solar thermal and heat pump systems (SolPumpEff)”. In this project different combinations of solar energy and heat pump systems are considered through dynamic system simulations in TRNSYS [1] . In such systems solar thermal energy can be used on one hand directly to charge the buffer storage and on the other hand as heat source for the evaporator of the heat pump (HP). In this work systems, in which solar heat is only used directly (parallel operation of solar and HP) and systems using the collectors also as a heat source for the HP are analysed and compared to conventional air HP systems. With a combined parallel solar thermal HP system the system performance compared to a conventional HP system can be significantly increased. Unglazed selectively coated collectors as source for the HP have the advantage, that the collector can be used as an air heat exchanger. If solar radiation is available and the collector is used as source for the HP, higher temperatures at the evaporator of the HP can be achieved than with a conventional air HP system.
[1]
Michel Y. Haller,et al.
ON THE POTENTIAL OF USING HEAT FROM SOLAR THERMAL COLLECTORS FOR HEAT PUMP EVAPORATORS
,
2011
.
[2]
Fabian Ochs,et al.
The Reference Framework for System Simulations of the IEA SHC Task 44 / HPP Annex 38 Part B: Buildings and Space Heat Load
,
2014
.
[3]
Jean-Christophe Hadorn.
SOLAR AND HEAT PUMP SYSTEMS Status of IEA SHC Task 44 & HPP Annex 38
,
2013
.
[4]
Gunter Rockendorf,et al.
Model of an Unglazed Photovoltaic Thermal Collector Based on Standard Test Procedures
,
2011
.
[5]
Janne Paavilainen,et al.
TRNSYS Type 832 v5.00 „Dynamic Collector Model by Bengt Perers“: Updated Input-Output Reference
,
2012
.
[6]
Gunter Rockendorf,et al.
Unglazed PVT collectors as additional heat source in heat pump systems with borehole heat exchanger
,
2012
.